.header3-main {
    margin-left:auto;
    margin-right:auto;
    width: 1226px;
    height: 100%;
    position: relative;
    display: flex;
}
.box{
    width: 1226px;
    height: 460px;
    position: relative;
    
}

.box-img{
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: all 1.5s;
}
.box-img:nth-child(1){
    opacity: 1;
}
.box-left{
    position: absolute;
    width: 35px;
    height: 70px;
    color: #ccc;
    top: 195px;
    left: 234px;
    border-radius:0 5px 5px 0;
    text-align: center;
    line-height: 70px;
    font-size: 27px;
}
.box-left:hover{
    background-color: #00000050;
    color: #fff;
}
.box-left:nth-child(1){
    background-color: #fff;
}
.box-right{
    position: absolute;
    width: 35px;
    height: 70px;
    color: #ccc;
    top: 195px;
    right: 0;
    border-radius:0 5px 5px 0;
    text-align: center;
    line-height: 70px;
    font-size: 27px;
}
.box-right:hover{
    background-color: #00000050;
    color: #fff;
}
.box-zhiding{
    position: absolute;
    bottom: 30px;
    right: 100px;
}
.box-zhiding>ul{
    padding: 0;
    margin: 0;
    list-style: none;
}
.box-zhiding li{
    width: 14px;
    height: 14px;
    border-radius: 100%;
    background-color: #ccc;
    float: left;
    margin-right: 10px;
}
.box-zhiding li:hover{
    background-color: #fff;
}
.header3-left{
    background: rgba(105, 101,101, 0.6);
    padding: 20px 0;
    width: 234px;
    height: 420px;
    font-size: 14px;
    position: absolute;
}
.header3-left>ul{
    list-style: none;
    font-size: 14px;
    padding: 0;
}
.header3-left>ul>li{
    line-height: 42px;
    width: 204px;
    padding-left: 30px;
}
.header3-left>ul>li>a{
    color: #fff;
    position: relative;
    
}

.slide-list{
    /*?*/
    width: 992px;
    height: 460px;
    background-color: #fff;
    border:  1px solid #ccc;
    border-left: none;
    box-sizing: border-box;
    box-shadow: 0 8PX 16PX rgba(0,0,0,0.1);
    position: absolute;
    left: 234px;
    top: 0;
    display: none;
    z-index: 1;
}
.slide-list>ul{
    width: 245px;
    height: 458px;
    float: left;
    margin: 0;
    padding: 0;
}
.slide-list>ul>li{
    width: 225px;
    height: 76px;
    float: left;
    padding: 18px 20px;
    box-sizing: border-box;
    line-height: 76px;
}
.slide-list a{
    display: block;
    height: 100%;
}
.slide-list img{
    float: left;
    width: 40px;
    height: 40px;
    margin-right: 12px;
}
.slide-list span{
    color: #333;
    font-size: 14px;
    position: relative;
    top: -10px;
}
.header3-left>ul>li:hover .slide-list{
    display: block;
}
.header3-left>ul>li:hover {
    background-color: #ff6700;
}
.slide-list span:hover{
    color: #ff6700;
}